1. Bimodule structure of some simple jordan algebras with respect to associative frobenius subalgebras

   • S. Yu. Vasilovskii

   OriginalPaper Pages: 235 - 250

2. Jordan homomorphisms of associative algebras with involution

   • L. A. Lagutina

   OriginalPaper Pages: 250 - 260

3. o-Approximability of bounded engelian l-groups

   • N. Ya. Medvedev

   OriginalPaper Pages: 261 - 263

4. Structure of supercopiable p-groups

   • Yu. B. Mel'nikov

   OriginalPaper Pages: 263 - 275

5. Algorithmic problems in varieties of semigroups

   • M. V. Sapir

   OriginalPaper Pages: 275 - 292

6. Ershov hierarchy and the t-jump

   • V. L. Selivanov

   OriginalPaper Pages: 292 - 301

7. Algorithmic degree of unars

   • B. M. Khusainov

   OriginalPaper Pages: 301 - 312